littlebird13 commited on
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c1edb3f
1 Parent(s): bbad625

Create app.py

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  1. app.py +102 -0
app.py ADDED
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+ import os
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+ os.system('pip install dashscope')
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+ import gradio as gr
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+ from http import HTTPStatus
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+ import dashscope
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+ from dashscope import Generation
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+ from dashscope.api_entities.dashscope_response import Role
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+ from typing import List, Optional, Tuple, Dict
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+ from urllib.error import HTTPError
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+ default_system = 'You are a helpful assistant.'
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+
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+ YOUR_API_TOKEN = os.getenv('YOUR_API_TOKEN')
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+ dashscope.api_key = YOUR_API_TOKEN
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+
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+ History = List[Tuple[str, str]]
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+ Messages = List[Dict[str, str]]
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+
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+ def clear_session() -> History:
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+ return '', []
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+
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+ def modify_system_session(system: str) -> str:
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+ if system is None or len(system) == 0:
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+ system = default_system
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+ return system, system, []
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+
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+ def history_to_messages(history: History, system: str) -> Messages:
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+ messages = [{'role': Role.SYSTEM, 'content': system}]
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+ for h in history:
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+ messages.append({'role': Role.USER, 'content': h[0]})
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+ messages.append({'role': Role.ASSISTANT, 'content': h[1]})
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+ return messages
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+
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+
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+ def messages_to_history(messages: Messages) -> Tuple[str, History]:
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+ assert messages[0]['role'] == Role.SYSTEM
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+ system = messages[0]['content']
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+ history = []
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+ for q, r in zip(messages[1::2], messages[2::2]):
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+ history.append([q['content'], r['content']])
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+ return system, history
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+
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+
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+ def model_chat(query: Optional[str], history: Optional[History], system: str
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+ ) -> Tuple[str, str, History]:
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+ if query is None:
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+ query = ''
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+ if history is None:
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+ history = []
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+ messages = history_to_messages(history, system)
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+ messages.append({'role': Role.USER, 'content': query})
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+ gen = Generation.call(
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+ model='qwen2-0.5b-instruct',
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+ messages=messages,
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+ result_format='message',
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+ stream=True
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+ )
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+ for response in gen:
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+ if response.status_code == HTTPStatus.OK:
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+ role = response.output.choices[0].message.role
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+ response = response.output.choices[0].message.content
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+ system, history = messages_to_history(messages + [{'role': role, 'content': response}])
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+ yield '', history, system
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+ else:
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+ raise ValueError('Request id: %s, Status code: %s, error code: %s, error message: %s' % (
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+ response.request_id, response.status_code,
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+ response.code, response.message
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+ ))
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+
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+
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+ with gr.Blocks() as demo:
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+ gr.Markdown("""<center><font size=8>Qwen2-0.5b-instruct👾</center>""")
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+
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+ with gr.Row():
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+ with gr.Column(scale=3):
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+ system_input = gr.Textbox(value=default_system, lines=1, label='System')
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+ with gr.Column(scale=1):
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+ modify_system = gr.Button("🛠️ Set system prompt and clear history", scale=2)
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+ system_state = gr.Textbox(value=default_system, visible=False)
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+ chatbot = gr.Chatbot(label='qwen2-0.5b-instruct')
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+ textbox = gr.Textbox(lines=1, label='Input')
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+
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+ with gr.Row():
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+ clear_history = gr.Button("🧹 Clear history")
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+ sumbit = gr.Button("🚀 Send")
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+
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+ textbox.submit(model_chat,
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+ inputs=[textbox, chatbot, system_state],
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+ outputs=[textbox, chatbot, system_input])
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+
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+ sumbit.click(model_chat,
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+ inputs=[textbox, chatbot, system_state],
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+ outputs=[textbox, chatbot, system_input],
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+ concurrency_limit = 5)
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+ clear_history.click(fn=clear_session,
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+ inputs=[],
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+ outputs=[textbox, chatbot])
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+ modify_system.click(fn=modify_system_session,
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+ inputs=[system_input],
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+ outputs=[system_state, system_input, chatbot])
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+
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+ demo.queue(api_open=False)
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+ demo.launch(max_threads=5)